As well as reporting the total number of sewage spills annually, environmental regulator the Environment Agency also records the number of pollution incidents, which are likely to cause serious harm to wildlife and people.
Eight years ago, the EA remarked that the water sector was not doing enough to reduce these incidents. It said this was causing "distress to local communities and blighting rivers and beaches."
The industry was set a target to reduce these incidents by 40% by 2025 against 2016 levels.
The latest publicly availably data is to the end of 2023. But following a Freedom of Information request, Surfers Against Sewage obtained the data up to the start of 2025.
This showed that 2,487 pollution incidents were recorded last year - a 31% increase on the 2016 levels, and almost double the original EA target.
"The water industry fails, fails and fails again," said Giles Bristow, CEO of Surfers Against Sewage.
He called for a reform of the system so that it "prioritises public health and value for customer money and delivers healthy coastlines, rivers and lakes."